Mashhad in context: Street-network sprawl trends

Mashhad in context

33.33.63.9<19751976–19901991–20052006–2020SNDi of street additions
33.33.63.9<19751976–19901991–20052006–2020SNDi of entire street network
MashhadRazavi Khorasan (Region)Iran (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Mashhad plotted against Razavi Khorasan and Iran. While Razavi Khorasan and Iran both rose steadily, Mashhad's new street additions rose steadily. Most recently, Mashhad's incremental SNDi rose from 3.51 to 4.0 between 1991-2005 and 2006-2020. In terms of the aggregate network, Mashhad ranked 5th out of 9 cities in Razavi Khorasan and 99th out of 169 in Iran as of 2020.

New Street Additions (2006–2020)

SNDi value
4.0
Rank in Iran
129th of 169
Rank in Razavi Khorasan
7th of 9

Entire Network (Aggregate)

SNDi value
3.15
Rank in Iran
99th of 169
Rank in Razavi Khorasan
5th of 9

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
MashhadAbidjanHong Kong

While Abidjan and Hong Kong both fluctuated in its street-construction patterns, Mashhad built increasingly disconnected streets over time in new street additions. For the full street network, though, all three cities follow the same trend. Mashhad and Abidjan have been growing further apart in their street-network character since 1975.